Callipidean Guide

When Callipidean Guide enters the battlefield,
reveal the top three cards of your library.
If {g} was used to cast the spell, put a land card
from among them into your hand. If {u} was used
to cast the spell, put a non-land card chosen at
random from among them into your hand.
If it was not cast, do both instead. Then put any
remaining cards on the bottom of your library in
random order.
"Cheerful guides. Warning: cannot distinguish
what and where."- A Wizard's Journal